leonard



IMPROVEMENT IN. GRATES FOR STOVES.

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TO ALL WHOM IT MAY CONCERN: v

Be it known that I, HENRY G. LEONARD, of Taunton, in the county ofBristol, and State of Massachusetts, have invented an Improvement inGrates for Stoves and Furnaces; and I do hereby declare that thefollowing, taken in connection with the drawings which accompany andform part of this specification, is a description of my inventionsufiicient to enable those skilled in the art to practise it.

The invention relates to the manner of hanging that class of grates forstoves and furnaces in which' the grate is made to tip for the purposeof letting the contents of the fire-pot into the ash-pit, with referenceto a provision for shaking or reciprocating such a grate horizontallyfor the purpose of sifting the ashes from the fire-pot into the ash-pit,theobjcct of the invention being to give a greater range ofreciprocative horizontal movement to the grate, so as to moreeifeetually separate the ashes from the unconsumed coals.

The invention consists, in connection with mounting the grate to tipvertically on a cross-shaft or axis, and to rock horizontally on avertical axis, of applying a horizontal lever to the crossshaft or axis,which lever is fulcrumed outside of the grate, and receives a pin,extending from the grate into an oblong slot in the lever, so that byreciprocating the lever at the front of the. furnace, its rear armcauses the grate to vibrate with a much greater extent of movement thancan'he obtained by projecting an arm directly from and fixed withreference to the grate, this shaking lever being so applied that itturns with and in no way impedes the tipping of the grate.

The drawings represent the base of a furnace with the grate theretoapplied in accordance with my invention; A showing a plan, and B avertical central section of the same. a denotes the base, ring, orflange upon which the fire-pot and furnace cylinder are supported. I)the grate, the space below which constitutes the ashpit. The grate issupported on a horizontal shaft or bar, 03, turning in bearings d, oneend of this shaft extending to the front or to the side of the stove, asseen at B, so that by applying a vertical lever to this end the gratemay be tipped or swung over to let the contents of the fire-pot downinto the ash-pit, as in other stoves or furnaces of this character. Thegrate is secured to the horizontal shaft 0 by a vertical axis or centreshaft, e, projecting from the grate, through a vertical bearing in theaxis 0, a pin,f, keeping the grate from movement away from the axiswhen-the grate is tipped. This vertical shaft allows the grate to turnfreely on the bar in a horizontal plane, as will be readily understood.Between the shaft 2 and the edge of thegrate, in the line of the axis a,and towards the front end of said axis, a pin, g, projects down from thegrate into an oblong slot, it, made through a lever, z. This lever 2'rests upon, and, so far as the tipping of the grate is concerned, formspart of, the axis a, but it is so applied to said axis that it may swinglaterally with reference thereto a fulcrum-pin, 7:, connecting the armand lover, as seen at B. The outer end of the lever is shown. as formingwith the end of the axis a the square head of the axis, to which thelever is applied by which the grate is tipped, while to the said end ofthe lever i a horizontal arm or extension of the lever may be applied toshake the grate horizontally, as willjbc readily understood, theconnection of the lever to the axis 0 freely permitting both the shakingand tipping movements of the grate. I

Now, in the common construction or arrangement of shaking and tippinggrates, an arm projects directly from the grate (or from a ringconcentric to and moving horizontally with the grate) through ahorizontal slot 7 formed in the front of the casting, in line with thegrate, but this slot cannot be made of sufiicient length to permit anyconsiderable lateral movement of this arm without weakening the casting.Without a considerable movement of the grate, however, the coal andashes cannot be'sufiiciently agitated to effect the separation of theashes from the coal through the grate-bars. I therefore apply the leverz, fulcrumed near the front or side of the stove, and having a slot intowhich a pin projects from the grate, this pin being arrangedat suchdistance from the edge of the grate towards its centre that thehorizontal reciprocating movement of the lever gives to the pin (andthence to the grate) a much greater length of movement than the frontend'of the lever has, or than that part thereof has which projectsthrough the slot in the side casting or plate of the furnace, thisrelative movement of the lever being effected without impairing theconstruction or arrangement of the axis upon which the grate tips. v V

I claim, in combination with a tipping and horizontally vibratory grate,the .lever 2', (into a slot in which a pin or projection from the grateworks,) when this lever is applied to the cross-shaft or axis 0, andoperates the grate, snbstantially ns set forth.'

' HENRY G. LEONARD.

Witnesses:

J. B. Gnosm', FRANCIS GOULD.

